CN109937024A - Bracket - Google Patents
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- CN109937024A CN109937024A CN201780070363.4A CN201780070363A CN109937024A CN 109937024 A CN109937024 A CN 109937024A CN 201780070363 A CN201780070363 A CN 201780070363A CN 109937024 A CN109937024 A CN 109937024A
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- Prior art keywords
- bracket
- valley
- grid
- end section
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/844—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents folded prior to deployment
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/91533—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other characterised by the phase between adjacent bands
- A61F2002/91541—Adjacent bands are arranged out of phase
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/9155—Adjacent bands being connected to each other
- A61F2002/91575—Adjacent bands being connected to each other connected peak to trough
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Prostheses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
A kind of bracket includes rack body, which defines longitudinal axis and proximally and distally, and can be expanded to expanded configuration from compressed configuration.Rack body includes multiple bracket sections.Bracket section includes: first end section and second end section on the opposite end of rack body, and configures at least one intermediate section between first end section and second end section.Each bracket section defines multiple grids and multiple peak potions and valley.At least one intermediate section defines only x grid.First end section defines at least x+1 grid.The size of each grid of first end section is essentially equal.Each of at least one intermediate section and first end section define only y peak potion and valley.
Description
Technical field
This disclosure relates to a kind of medical device, and more particularly to a kind of bracket.
Background technique
Bracket is widely used in many medical applications, and bracket is placed on object in these medical applications
In inner cavity and expand.Bracket can use in coronary artery or peripheral vascular system and other body cavitys.In some instances,
Bracket is metallic tube-shaped structure, passes through body cavity with collapsed state.At blockage or other site of deployment in body cavity, bracket
Expansion is to support inner cavity.Bracket can be self expandable or can balloon expandable.Self-expanded stent can via delivery apparatus with by
Restrained condition is inserted into body cavity and is released, so that free bracket can freely radial dilatation.It can balloon expandable
Bracket can be positioned on the sacculus of foley's tube, and bracket can be expanded at site of deployment by the expansion of sacculus.
Summary of the invention
In some respects, the present disclosure describes the example brackets that can be intravascular stent or arterial bracket.Bracket can wrap
Rack body is included, which defines longitudinal axis and proximally and distally.Rack body can be expanded to from compressed configuration
Expanded configuration.Rack body may include multiple bracket sections, including the first end section and on the opposite end of rack body
At least one intermediate section of two end segments and configuration between first end section and second end section.Each bracket section can
Define multiple grids and multiple peak potions and valley.At least one intermediate section can define only x grid.It can be proximal end
Or the first end section of distal end sections can define at least x+1 grid.The size of each grid of first end section can be basic
It is upper equal.At least one intermediate section and first end section can respectively define only y peak potion and valley.
In some instances, example bracket can be formed by the following method: this method includes the pipe for selecting appropriate diameter
Shape component forms above-mentioned bracket pattern in tubular element to form rack body, make that tubular element is progressively expanded and heat is fixed
Shape and by pipe heat setting in its final diameter.
Technical solution 1: in some instances, bracket includes rack body, the rack body define longitudinal axis and
Proximally and distally.Rack body can be expanded to expanded configuration from compressed configuration.Rack body includes multiple bracket sections.Cradle portion
Section includes first end section and second end section on the opposite end of rack body, and configuration in first end section and second
At least one intermediate section between end segments.Each bracket section defines multiple grids.Each bracket section defines more
A peak potion and valley.At least one intermediate section defines only x grid.First end section defines at least x+1 grid.
The size of each grid of first end section is essentially equal.At least one intermediate section defines only y peak potion and valley.
First end section defines only y peak potion and valley.
Technical solution 2: in some examples of the bracket of technical solution 1, first end section defines only one grid
Part only three peak potions, only two paddy are defined on each of two opposite sides of the part of first end section
Portion and only two half valley.
Technical solution 3: in some examples of the bracket of technical solution 1 or 2, at least one intermediate section is defined only
The part of one grid defines only four peak potions, only three on each of two opposite sides of the part of intermediate section
A valley and only two half valley.
Technical solution 4: in some examples of the bracket of any one of technical solution 1-3, second end section define to
Few x+1 grid.
Technical solution 5: in some examples of the bracket of any one of technical solution 1-4, each net of second end section
The size of lattice is essentially equal.
Technical solution 6: in some examples of the bracket of any one of technical solution 1-5, second end section is defined
The part of only one grid defined on each of two opposite sides of the part of second end section only three peak potions,
Only two valley and only two half valley.
Technical solution 7: in some examples of the bracket of any one of technical solution 1-6, at least one intermediate section
The size of each grid is essentially equal.
Technical solution 8: in some instances, a kind of method, which is included in tubular element, to be formed bracket pattern and is limited with being formed
There are longitudinal axis and rack body proximally and distally.Rack body can be expanded to expanded configuration from compressed configuration.Bracket master
Body includes multiple bracket sections.Bracket section includes: first end section and second end section on the opposite end of rack body,
And at least one intermediate section of configuration between first end section and second end section.Each bracket section defines multiple
Grid.Each bracket section defines multiple peak potions and valley.At least one intermediate section defines only x grid.First
End segments define at least x+1 grid.The size of each grid of first end section is essentially equal.Among this at least one
Section defines only y peak potion and valley.First end section defines only y peak potion and valley.
Technical solution 9: in some examples of the method for technical solution 8, tubular element includes shape-memory material.
Technical solution 10: in some examples of the method for technical solution 8 or 9, this method further includes making tubular element gradually
P-adic extension p and heat setting.
Technical solution 11: in some examples of the method for any one of technical solution 8-10, the restriction of first end section
There is a part of only one grid to define only three on each of two opposite sides of the part of first end section
Peak potion, only two valley and only two half valley.
Technical solution 12: in some examples of the method for any one of technical solution 8-11, at least one intermediate section
The part for defining only one grid only four are defined on each of two opposite sides of the part of intermediate section
A peak potion, only three valley and only two half valley.
Technical solution 13: in some examples of the method for any one of technical solution 8-12, second end section is defined
At least x+1 grid.
Technical solution 14: in some examples of the method for any one of technical solution 8-13, each of second end section
The size of grid is essentially equal.
Technical solution 15: in some examples of the method for any one of technical solution 8-14, the restriction of second end section
There is the part of only one grid to define only three peaks on each of two opposite sides of the part of second end section
Portion, only two valley and only two half valley.
Technical solution 16: in some examples of the method for any one of technical solution 8-15, at least one intermediate section
The size of each grid be essentially equal.
Technical solution 17: in some examples of the method for any one of technical solution 8-16, the restriction of first end section
There is the part of only one grid to define only two peaks on each of two opposite sides of the part of first end section
Portion, only two half peak potions and only three valley.
Technical solution 18: in some instances, a kind of method includes: to make the distal advancement of conduit to the treatment of patient's body
Position, wherein bracket is configured in conduit；And bracket is discharged from conduit in treatment site.The bracket includes bracket
Main body, the rack body define longitudinal axis and proximally and distally.Rack body can be expanded to expansion structure from compressed configuration
It makes.Rack body includes multiple bracket sections.Bracket section includes first end section and on the opposite end of rack body
Two end segments, and configure at least one intermediate section between first end section and second end section.Each bracket section
Define multiple grids.Each bracket section defines multiple peak potions and valley.At least one intermediate section defines only x
Grid.First end section defines at least x+1 grid.The size of each grid of first end section is essentially equal.This is extremely
A few intermediate section defines only y peak potion and valley.First end section defines only y peak potion and valley.
Technical solution 19: in some examples of the method for technical solution 18, this method further include: be inserted into guiding elements
Into the body cavity of patient；And the distal end of conduit is made to advance to therapentic part on guiding elements.
Technical solution 20: in some examples of the method for technical solution 18 or 19, first end section defines only one
The part of a grid defines only three peak potions, only two on each of two opposite sides of the part of first end section
A valley and only two half valley.
Technical solution 21: in some examples of the method for any one of technical solution 18-20, at least one intermediate section
The part for defining only one grid only four are defined on each of two opposite sides of the part of intermediate section
A peak potion, only three valley and only two half valley.
Technical solution 22: in some examples of the method for any one of technical solution 18-21, second end section is defined
At least x+1 grid.
Technical solution 23: in some examples of the method for any one of technical solution 18-23, each of second end section
The size of grid is essentially equal.
Technical solution 24: in some examples of the method for any one of technical solution 18-23, the restriction of second end section
There is the part of only one grid to define only three peaks on each of two opposite sides of the part of second end section
Portion, only two valley and only two half valley.
Technical solution 25: in some examples of the method for any one of technical solution 18-24, at least one middle part
The size of each grid of section is essentially equal.
The details of the one or more aspects of the disclosure is illustrated in attached drawing below and description.From explanation, attached drawing and
In claim, the other features, objects and advantages of technology described in the disclosure be will become obvious.
Detailed description of the invention
Figure 1A is the perspective view of the example bracket in expansion state.
Figure 1B is the plan view of a part of the bracket of Figure 1A, which is unfolded, lays flat and in unexpanded state.
Fig. 1 C is the plan view of a part of the bracket of Figure 1A, which is unfolded, lays flat and in expansion state.
Fig. 2 is the flow chart for showing the illustrative methods of bracket shown in manufacture Figure 1A -1C.
Fig. 3 is the flow chart for showing the illustrative methods of bracket shown in implantation Figure 1A -1C.
Specific embodiment
Medical stand, such as intravascular stent or arterial bracket be configured so to bracket such as lateral and radial strength,
Resistance to fracture and homogeneous strain distribution etc certain mechanical properties balance each other on longitudinally and radially direction with stent flexibility.Branch
Frame can be flexible, to adapt to the movement at the implant site of patient's body.For example, bracket can be positioned on the pass of object
In the vascular system for saving the object at or near (for example, buttocks, pelvis, knee, ancon etc.).In that region, bracket can
It is amenable to torsion, bending and other machinery stress.In addition, for example be configured to other implantation for artery implant site etc
The bracket at position is compared, for such as inferior caval vein (IVC), arteria iliaca communis, arteria iliaca externa and common stock venosomes etc
The bracket of venous system needs relatively high intensity and maximum flexibility.
In some cases, the end of bracket is (for example, it may be the distal end or proximal end of bracket terminal or distal end and close
Both ends) there may be the performance requirement different from the middle section of bracket.For the end of bracket, flexible, radial force
(for example, power from the central axis of bracket radially outward direction) and lateral force (for example, power on single lateral)
And the requirement of durability may be respectively different with middle section.In addition, the deployment about bracket in the body cavity of patient
Easness and/or deployment precision, which can play the role of especially important.
Example bracket described herein can realize special technical advantage.For example, at least one end segments of bracket
It retrofits, so that it is with the construction different with (between end segments) intermediate section of bracket including more
The grid (for example, since connector greater number of between greater number of strut, strut or the two have concurrently) of quantity, this
Kind remodeling can improve compared with the bracket without modifying any end segments (with same structure in intermediate section and end segments)
The easness and/or deployment precision of deployment.The construction of the end segments of bracket allows bracket further smoothly (for example, can undergo
Less " jump ") from delivery apparatus (for example, delivery catheter) dispose, this allow bracket be easier, more predictably and
It is more accurately deployed in the expection position in patient's body lumen, and bracket will not be jumped out from delivery apparatus (for example, with outer shield
Set is contracted) and far from the set goal position.
With the grid of the uniform-dimension of the strut but twice intermediate section that include quantity identical with the strut of intermediate section
The end segments of the grid of quantity are compared, and example bracket described herein can also be achieved special technical advantage.For example, this set
The example bracket of meter can have increased flexibility, without substantially reducing radial force or lateral force.With the flexibility of end segments
Increase, the bracket of overlapping can have smoother soft in overlapping region (for example, being limited by the end segments for the bracket being overlapped)
Property transition, and therefore in the construction of overlapping have improved durability.
In some instances, bracket includes rack body, which defines longitudinal axis and proximally and distally.
Rack body can be expanded to expanded configuration from compressed configuration.Rack body may include multiple bracket sections, be included in rack body
Opposite end on first end section and second end section and configuration between first end section and second end section at least
One intermediate section.Each bracket section can define multiple grids and multiple peak potions and valley.At least one middle part
Section can define only x grid.First end section can define at least x+1 grid.The ruler of each grid of first end section
It is very little to be essentially equal.At least one intermediate section can define only y peak potion and valley.First end section can define only
Y peak potion and valley.
In some instances, example bracket can be formed by the following method: this method includes the pipe for selecting appropriate diameter
Shape component forms above-mentioned bracket pattern in tubular element to form rack body, make that tubular element is progressively expanded and heat is fixed
Shape and by pipe heat setting in its final diameter.
Although attached drawing below shows the bracket with certain amount of section, the quantity of section can be according to intervention
The type of formula program and desired stent length and change.
The bracket of the disclosure can be specifically applicable to the iliofemoral vein of patient.However, bracket can be used for vascular system or its
Any suitable position of its body cavity.
Figure 1A is the perspective view of the example bracket in expansion state.Figure 1B is the plane of a part of the bracket of Figure 1A
Figure, the part are unfolded, lay flat and in unexpanded state.Fig. 1 C is the plan view of a part of the bracket of Figure 1A, the part
It is unfolded, lays flat and in expansion state.In the example shown in 1A -1C, bracket includes rack body 100, bracket master
Body 100 defines longitudinal axis " k ", proximal end 102a and distal end 102b.Rack body 100 can be from compressed configuration as shown in Figure 1B
It is expanded to expanded configuration as figs. 1A and 1 c show.
In compressed configuration, rack body 100 can define lesser profile (for example, cutting at " k " perpendicularly to the longitudinal axis
Lesser outer perimeter in the cross section taken, the outer perimeter are that can be outside in circular example in the cross section of rack body 100
Diameter).Rack body 100 can for example be before treatment site deployment including when rack body 100 is delivered to therapentic part
When compressed.At least partially due to compared with the rack body 100 of little profile, the compressed configuration of rack body 100 allowed compared with
The delivery system of little profile, this can increase the easness that rack body 100 can be delivered to endoceliac therapentic part.
In some instances, rack body 100 may be biased to expanded configuration, but can be for example by the shield of delivery catheter
Set compression and about beam, until rack body 100 is disposed from delivery catheter.For example, rack body 100 can be by such as, but not limited to
The shape-memory material of Nitinol is formed.Rack body 100 can be for example, by retracting the sheath of delivery catheter and in therapy section
It is disposed at position, the sheath for retracting delivery catheter allows rack body 100 to be expanded in body cavity.In some instances, it props up
Frame body 100 may not be biased to expanded configuration, and may be for example, by foley's tube or suitable for making rack body 100
Another mechanism of expanded configuration is expanded to from compressed configuration and is expanded at site of delivery.For example, rack body 100 can be by not
Rust steel or other suitable non-self expandable materials are formed.
Rack body 100 may include multiple bracket section 104a -104g (collectively referred to herein as " bracket section 104 ").
Each bracket section 104 can be limited by a pair of adjacent circumferential strut row, wherein every row's strut extends along circumferential direction.Such as
The adjacent stent section of bracket section 104a and 104b etc can share the common strut of a row.Exemplary strut is shown in fig. 1 c
It is shown as strut 105a -105o, and the strut of rack body 100 can be collectively referred to as strut 105.Each strut 105 can be bracket
The essentially flat part (for example, straight or almost straight component) of main body 100, can at vertex 108 with one
Or a number of other struts are connected.For example, strut 105b is the essentially flat part of rack body 100, strut 105b
It is connected at the 108o of vertex with strut 105a, 105i and 105j and is connected at the 108d of vertex with strut 105c.As
Another example, strut 105c are the straight portions of rack body 100, strut 105c at the 108d of vertex with strut 105b phase
Link and is connected at the 108p of vertex with strut 105d.In some instances, strut 105 can be expanded in rack body 100
Before and after keep essentially flat.However, when rack body 100 is expanded to expanded configuration from compressed configuration, strut
105 can be movable with respect to each other, such as pivot relative to adjacent struts in apex.
Although showing the bracket section 104a -104g and four independences that rack body 100 includes seven overlappings in Figure 1A
, nonoverlapping bracket section 104a, 104c, 104e and 104g, but in other examples, according to specific needs, bracket master
Body 100 may include any appropriate number of bracket section 104.For example, in the application for needing shorter bracket, rack body
100 may include small number of bracket section 104, such as three, four or five bracket sections.As another example,
It needs in the application compared with long stent, rack body 100 may include greater number of bracket section 104.In some instances,
Each bracket section 104 can be shorter and/or longer, so that general branch's tower section 104 of more or less quantity may make bracket
The length having the same of main body 100.
The bracket section 104 of rack body 100 includes: the end segments 104a at the proximal end 102a of rack body 100,
And the end segments 104g at the distal end 102b of rack body 100.Each of end segments 104a and 104g can be located at
One end of rack body 100, so that it is only adjacent with an other bracket sections.Bracket section 104 further includes configuration in end
At least one intermediate section 104b -104f between section 104a and end segments 104g.
The strut of each bracket section 104 can limit multiple grids 106, and each grid can be the strut institute by surrounding
The closure grid of restriction, and each closure grid defines single opening.For example, end segments 104a can define grid
106a -106d, intermediate section 104b can define grid 106e -106g, and end segments 104g can define grid 106t -
106w.In some instances, the size of each grid 106a -106d of end segments 104a can be essentially equal.In addition, some
In example, the size of each grid 106e -106g of intermediate section 104b can be essentially equal.In some instances, end segments
The size of each grid 106t -106w of 104g can be essentially equal.For example, in some instances, end segments 104a, 104g
The size of each grid 106a -106d, 106t -106w that individual or with intermediate section each grid is combined can be substantially
It is equal.
In some instances, terminal 110a -110f, which is configured to aid in, is maintained on delivery apparatus (example for rack body 100
Such as, it is configured to match with the structure on delivery apparatus).In addition, in some instances, one or more terminal 110a -110f
It can be radiopaque or may include radiopaque element, may be configured to that clinician is assisted to see rack body
100 in endoceliac position.
The strut 105 of end segments 104a is configured to limit multiple peak potions and valley.Peak potion can be following vertex 108,
The adjacent struts 105 on itself and the formation vertex are directed toward the distal side or close of the longitudinal center far from the bracket section including grid together
Side direction.For example, strut 105b and 105c is connected at the 108d of vertex, the longitudinal direction far from bracket section 104a is directed toward to be formed
The peak potion of the proximal direction at center.The longitudinal center of bracket section 104a is by marking the line for being l " to show in Fig. 1 C.As another
Kind example, strut 105j and 105k are connected at the 108pp of vertex, are directed toward the longitudinal center far from bracket section 104a to be formed
Distal direction peak potion.Valley can be following vertex, and direction is directed toward together with the adjacent struts for forming vertex and includes
The distal side of the longitudinal center of the bracket section of grid or proximal direction.For example, strut 105c is connected at the 108p of vertex with 105d
Knot is directed toward the valley of the distal direction towards the longitudinal center of bracket section 104a to be formed.As another example, strut
105k and 105l is connected to be formed and be directed toward towards the proximal direction of the longitudinal center of bracket section 104a at the 108dd of vertex
Valley.In some cases, the vertex of valley can be located at the longitudinal center of the bracket section including grid.For example, strut 105a,
105b, 105i and 105j are connected at the vertex 108o at the longitudinal center of bracket section 104a, strut 105a and 105b shape
At the valley in distally directed direction, and strut 105i and 105j form the valley in proximally directed direction.
Vertex 108a-108l and 108mm-108xx can correspond to the multiple peak potions limited by end segments 104a, and vertex
108m-108x, 108aa, 108bb, 108o, 108dd, 108ee, 108r, 108gg, 108hh, 108u, 108j, 108kk and 108x
It can correspond to the multiple valley limited by end segments 104a.In some instances, intermediate section 104b can define multiple peak potions
And valley.For example, vertex 108aa, 108bb, 108o, 108dd, 108ee, 108r, 108gg, 108hh, 108u, 108jj,
108kk, 108x and 108mmm-108xxx can correspond to the multiple peak potions limited by intermediate section 104b, and vertex 108mm-
108xx, 108aaa, 108nn, 108ccc -108eee, 108rr, 108ggg -108iii, 108vv, 108kkk and 108lll can be right
Multiple valley that Ying Yu is limited by intermediate section 104b.
In some instances, at least one of end segments 104a or end segments 104g are (for example, end segments 104a or 104g
In one or both end segments 104a and 104g) can define it is more than at least one of intermediate section 104b -104f
Grid.For example, any of intermediate section 104b and/or intermediate section 104c -104f can define x grid, and
Both end segments 104a, end segments 104g or end segments 104a, 104g can define at least x+1 grid.As an example,
Shown in example, intermediate section 104b, which is limited, limits that there are four nets there are three grid 106e, 106f and 106g, end segments 104a
Lattice 106a, 106b, 106c and 106d, and there are four grid 106t, 106u, 106v and 106w for end segments 105g restriction.
In some instances, each of bracket section 104a-104g can define the peak potion and valley of identical quantity.
For example, in the example shown, each bracket section 104a-104g defines 24 peak potions and 24 valley.For example, end segments
104a defines 24 peak potions, and each peak potion corresponds to one in vertex 108a-108l and 108mm-108xx, and limits
Have 24 valley, each valley correspond to vertex 108m-108x, 108aa, 108bb, 108o, 108dd, 108ee, 108r,
One in 108gg, 108hh, 108u, 108j, 108kk and 108x；Intermediate section 104b defines 24 peak potions, each peak potion
Corresponding to vertex 108aa, 108bb, 108o, 108dd, 108ee, 108r, 108gg, 108hh, 108u, 108j, 108kk, 108x
With one in 108mmm-108xxx, and define 24 valley, each valley correspond to vertex 108mm-108xx,
108aaa, 108nn, 108ccc, 108ddd, 108eee, 108rr, 108ggg, 108hhh, 108iii, 108w, 108kkk and
One in 108lll.
In some instances, biggish grid can be limited compared to lesser grid by more surrounding struts, and be compared
Small grid can define more peak potions and valley.For example, each of grid 106a, 106b, 106c and 106d can be by
12 surrounding struts are limited, and each of grid 106e, 106f and 106g can be limited by eight surrounding struts.Example
Such as, grid 106b can by 12 surrounding strut 105b, 105c, 105d, 105e, 105f, 105g, 105j, 105k, 105l,
105m and 105n is limited.Further for example, each of two opposite sides of each grid 106a, 106b, 106c and 106d can limit
Fixed there are three peak potion, two valley and two half valley, and in two opposite sides of each grid 106e, 106f and 106g
Each can limit there are four peak potion, three valley and two half valley.For example, in two opposite sides of grid 106a
Each can be limited there are three peak potion, two valley and two half valley, and three peak potions are formed in strut 105b on side
At vertex 108e at vertex 108d between 105c, between strut 105d and 105e and between strut 105f and 105g
Vertex 108f at, and on another side by between strut 105j and 105k vertex 108pp, by strut 105l and 105m it
Between vertex 108qq and strut 105n and 105o between vertex 108rr formed, two valley are formed in branch on side
At vertex 108q at vertex 108p between bar 105c and 105d and between strut 105e and 105f, and on another side
It is formed by the vertex 108dd between strut 105k and 105l and the vertex 108ee between strut 105m and 105n, two
Half valley formed on side by strut 105b and 105f, and formed on another side by strut 105j and 105n.Half paddy
Portion can be the half of valley, and a strut by limiting grid is limited, and can be with the adjacent branch by limiting adjacent mesh
The combination of another half valley defined by bar, to form valley.For example, strut 105b can limit the half of valley, and prop up
Bar 105a can limit one and half valley, so that two half valley can link at the 108o of vertex to form entire valley.
In other words, two phases of the part for defining only one grid of end segments 104a in the part of end segments 104a
Only three are defined on each of opposite side (that is, the every each strut circumferentially arranged for limiting the either side of respective holder section)
Peak potion, only two valley and only two half valley.For example, defining the part of the end segments 104a of grid 106a one
Three peak potions corresponding to vertex 108d, 108e and 108f, two paddy corresponding to vertex 108p and 108q can be defined on side
Portion and two half valley corresponding to vertex 108o and 108r, and can define corresponding to vertex on another side
Three peak potions of 108pp, 108qq and 108rr, corresponding to vertex 108dd and 108ee two valley and correspond to vertex
Two half valley of 108cc and 108ff.
In some instances, the part for defining only one grid of intermediate section 104v is in the part of intermediate section
Only four peak potions, only three valley and only two half valley are defined on each of two opposite sides.For example, limit
Surely have the part of the intermediate section 104b of grid 106e can define on side corresponding to vertex 108bb, 108cc, 108dd and
Four peak potions of 108ee, corresponding to vertex 108oo, 108pp and 108qq three valley and correspond to vertex 108nn and
Two half valley of 108rr, and can define on another side corresponding to vertex 108nnn, 108ooo, 108ppp and
Four peak potions of 108qqq, corresponding to vertex 108ccc, 108ddd and 108eee three valley and correspond to vertex
Two half valley of 108bbb and 108fff.
In some instances, the part for defining only one grid of end segments 106g is in the part of end segments 104g
Only three peak potions, only two valley and only two half valley are defined on each of two opposite sides.
Rack body described herein, the end segments including rack body 100 shown in Figure 1A -1C may have and prop up
The different performance requirement in the middle section of frame.For example, the construction of end segments can help improve bracket and dispose in the body cavity of patient
Easness and/or deployment precision.For example, although having greater number of grid and smaller grid that can reduce end in end segments
The flexibility of section, but they can help to increase that the easness and/or deployment precision that bracket is disposed in body cavity.
Compared with the bracket in end segments and intermediate section with same structure, rack body 100 as described herein
Grid 106 pattern, i.e., with the construction different from the intermediate section of rack body 100 end segments 104a and 104g, packet
Grid more greater number of than intermediate section is included (to be surrounded by less strut with smaller grid and compare intermediate section
Grid includes the grid of less peak potion and valley) 106 pattern of grid, can improve bracket deployment easness and deployment essence
Degree.For example, bracket can further smoothly (for example, can undergo less " jump ") be disposed from delivery apparatus, so that bracket can more hold
Easily, in the more predictable and expection position that is more accurately deployed in patient's body lumen, and bracket will not be jumped out simultaneously from delivery apparatus
Far from target position.
It include the strut of quantity identical with the strut of intermediate section but the uniform-dimension of twice intermediate section with having
The bracket of the end segments of the grid of number of grid is compared, the end segments 104a's and 104g of rack body 100 as described herein
The pattern of grid 106 can also realize special technical advantage.For example, the end segments 104a and 104g of this design can have increase
Flexibility, without substantially reducing radial force or lateral force.As the flexibility in end segments 104a and 104g increases, the branch of overlapping
Frame can have smoother flexible transition in overlapping region, and therefore have improved durability in the construction of overlapping.
Fig. 2 is the flow chart for showing the illustrative methods of bracket shown in manufacture Figure 1A -1C.According to the manufacturing method
Process selects the pipe (202) such as with the Nitinol tube of diameter suitably limited etc.For the application of vein, branch
Frame may need bigger wall thickness relative to the bracket in artery, for example, the bracket for 10,12 and 14 millimeters is about 0.45
The wall thickness of millimeter, and for wall thickness that 16,18 and 20 millimeters of bracket is about 0.7 millimeter.Then by pipe relative to laser
Device positioning.The laser for being programmed to provide the cradle portion segment type formula of above-described rack body 100 is activated to form branch
Tower section pattern (204).
Bracket be can self expandable and therefore in the example that is formed by self expandable material, the pipe cut is then subjected to shape
Shape sets process, and in this process, the pipe cut is expanded in mandrel and then is heated (206).It is used multiple times progressive
100 shape of rack body is set to desired expansion diameter (208) by expansion and heat cycles.In some instances, finally
Expansion diameter can be equal to the desired deployment diameter of rack body 100.Rack body 100 can be limited axially, so that branch
The length of frame does not change during expansion.
Fig. 3 is the flow chart for showing the illustrative methods of bracket shown in implantation Figure 1A -1C.Guiding elements can be introduced
In the body cavity of patient (302).Guiding elements can advance through body cavity, and the front end (distal end) of guiding elements is located in by clinic
Target position determined by doctor.In some instances, guiding elements may include seal wire, guiding catheter or seal wire and guidance
Both conduits.
Outer catheter can be introduced on guiding elements, or in some instances, outer catheter is introduced in guiding elements, and
The distal part of outer catheter can advance (304) substantially adjacent to the therapentic part as determined by clinician.Outer catheter can limit
There is outer catheter inner cavity.
Guiding elements can be contracted, and to remove guiding elements (306) from outer catheter inner cavity, while outer catheter is retained in
Position.
In some instances, inner catheter can be introduced into outer catheter, and the distal part of inner catheter may proceed to treatment
Near sites (308).In some instances, the distal part of inner catheter may proceed to substantially right with the distal part of outer catheter
It is quasi-.In such an example, the distal part of inner catheter be securable to include the rack body 100 of Figure 1A -1C bracket.
In some instances, outer catheter and inner catheter can advance to target position simultaneously, and wherein inner catheter is in outer catheter
And bracket is located between inner catheter and outer catheter.For example, entitled " the STENT for being Senness et al. in inventor's signature
Delivery apparatus described in U.S. Patent Application No. 14/256,136 of DELIVERY SYSTEM (stent delivery system) " can
For delivering any bracket as described herein, full text in a manner of to be included in herein.In such an example, outer catheter can
It helps to keep bracket relative to inner catheter.
Bracket can be released from inner catheter inner cavity and to therapentic part (310).For example, in some instances, plunger can be with
Advance in interior conduit cavity, to push bracket from the distal part of inner catheter inner cavity.Clinician can control plunger so that column
Plug advances, so that bracket advances from inner catheter.
In other examples, bracket can be positioned between inner catheter and outer catheter, and outer catheter can be relative to inner catheter
It is contracted with bracket, to allow bracket to discharge from inner catheter.
When bracket is discharged or discharged around the outer surface of inner catheter from the distal end of inner catheter inner cavity, bracket is expansible,
So that it is fixed against body lumen wall and by stent anchors in body cavity.In other examples, bracket can be via sacculus or other machines
Structure expansion.
After satisfactorily delivering stent, other elements (312) can be removed from body cavity, these elements include for example outer
Conduit, inner catheter and/or plunger.
Various examples have been described.These and other example is within the scope of the appended claims.
Claims (22)
1. a kind of bracket, the bracket include:
Rack body, the rack body define longitudinal axis and proximally and distally, and the rack body can be from compression structure
It makes and is expanded to expanded configuration, the rack body includes multiple bracket sections,
Wherein, the bracket section includes: first end section and second end section on the opposite end of the rack body, with
And at least one intermediate section of configuration between the first end section and the second end section,
Wherein, each bracket section defines multiple grids,
Wherein, each bracket section defines multiple peak potions and valley,
Wherein, at least one described intermediate section defines only x grid,
Wherein, the first end section defines at least x+1 grid, the size of each of described first end section grid
It is essentially equal,
Wherein, at least one described intermediate section defines only y peak potion and valley, and
Wherein, the first end section defines only y peak potion and valley.
2. bracket as described in claim 1, which is characterized in that the first end section defines grid described in only one
Part defines only three peak potions, only two on each of two opposite sides of the part of the first end section
Valley and only two half valley.
3. bracket as described in claim 1, which is characterized in that at least one intermediate section defines described in only one
The part of grid each of two opposite sides of the part of the intermediate section it is upper limit there are four peak potion, only three
A valley and only two half valley.
4. bracket as described in claim 1, which is characterized in that the second end section defines at least x+1 grid.
5. bracket as described in claim 1, which is characterized in that the size base of each of described second end section grid
It is equal in sheet.
6. bracket as claimed in claim 5, which is characterized in that the second end section defines grid described in only one
Part defines only three peak potions, only two on each of two opposite sides of the part of the second end section
Valley and only two half valley.
7. bracket as described in claim 1, which is characterized in that each of at least one described intermediate section grid
Size is essentially equal.
8. a kind of method, which comprises
Bracket pattern is formed in tubular element defines longitudinal axis and rack body proximally and distally to be formed, it is described
Rack body can be expanded to expanded configuration from compressed configuration, and the rack body includes multiple bracket sections,
Wherein, the bracket section includes: first end section and second end section on the opposite end of the rack body, with
And at least one intermediate section of configuration between the first end section and the second end section,
Wherein, each bracket section defines multiple grids,
Wherein, each bracket section defines multiple peak potions and valley,
Wherein, at least one described intermediate section defines only x grid,
Wherein, the first end section defines at least x+1 grid, the size of each of described first end section grid
It is essentially equal,
Wherein, at least one described intermediate section defines only y peak potion and valley, and
Wherein, the first end section defines only y peak potion and valley.
9. method according to claim 8, which is characterized in that the tubular element includes shape-memory material.
10. method according to claim 8, which is characterized in that further include expanding the tubular element progressively to determine with heat
Shape.
11. method according to claim 8, which is characterized in that the first end section defines grid described in only one
Part only three peak potions, only two are defined on each of two opposite sides of the part of the first end section
A valley and only two half valley.
12. method according to claim 8, which is characterized in that at least one intermediate section defines only one institute
State grid part defined on each of two opposite sides of the part of the intermediate section only four peak potions,
Only three valley and only two half valley.
13. method according to claim 8, which is characterized in that the second end section defines at least x+1 grid.
14. method according to claim 8, which is characterized in that the size base of each of described second end section grid
It is equal in sheet.
15. method according to claim 8, which is characterized in that the second end section defines grid described in only one
Part only three peak potions, only two are defined on each of two opposite sides of the part of the second end section
A valley and only two half valley.
16. method according to claim 8, which is characterized in that each of at least one described intermediate section grid
Size is essentially equal.
17. method according to claim 8, which is characterized in that the first end section defines grid described in only one
Part only two peak potions, only two are defined on each of two opposite sides of the part of the first end section
A half peak potion and only three valley.
18. a kind of method, which comprises
Make the distal advancement of conduit to the therapentic part of patient's body, wherein bracket is configured in the conduit；
The bracket is discharged from the conduit in the treatment site, the bracket includes:
Rack body, the rack body define longitudinal axis and proximally and distally, and the rack body can be from compression structure
It makes and is expanded to expanded configuration, the rack body includes multiple bracket sections,
Wherein, the bracket section includes: first end section and second end section on the opposite end of the rack body, with
And at least one intermediate section of configuration between the first end section and the second end section,
Wherein, each bracket section defines multiple grids,
Wherein, each bracket section defines multiple peak potions and valley,
Wherein, at least one described intermediate section defines only x grid,
Wherein, the first end section defines at least x+1 grid, the size of each of described first end section grid
It is essentially equal,
Wherein, at least one described intermediate section defines only y peak potion and valley, and
Wherein, the first end section defines only y peak potion and valley.
19. method as claimed in claim 18, which is characterized in that further include:
Guiding elements is inserted into the body cavity of patient；And
The distal end of the conduit is set to advance to the therapentic part on the guiding elements.
20. method as claimed in claim 18, which is characterized in that the first end section defines grid described in only one
Part only three peak potions, only two are defined on each of two opposite sides of the part of the first end section
A valley and only two half valley.
21. method as claimed in claim 18, which is characterized in that at least one intermediate section defines only one institute
State grid part defined on each of two opposite sides of the part of the intermediate section only four peak potions,
Only three valley and only two half valley.
22. method as claimed in claim 18, which is characterized in that the size base of each of described second end section grid
It is equal in sheet, and wherein, the part for defining grid described in only one of the second end section is in the second end section
Each of two opposite sides of the part on define only three peak potions, only two valley and only the half of two
Valley.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15/351,052 | 2016-11-14 | ||
| US15/351,052 US10258488B2 (en) | 2016-11-14 | 2016-11-14 | Stent |
| PCT/US2017/061209 WO2018089867A1 (en) | 2016-11-14 | 2017-11-13 | Stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109937024A true CN109937024A (en) | 2019-06-25 |
Family
ID=60480448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780070363.4A Withdrawn CN109937024A (en) | 2016-11-14 | 2017-11-13 | Bracket |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US10258488B2 (en) |
| EP (1) | EP3538036B1 (en) |
| CN (1) | CN109937024A (en) |
| WO (1) | WO2018089867A1 (en) |
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| WO2015112915A1 (en) * | 2014-01-24 | 2015-07-30 | Elixir Medical Corporation | Biodegradable endoprostheses and methods for their fabrication |
| US10016292B2 (en) | 2014-04-18 | 2018-07-10 | Covidien Lp | Stent delivery system |
-
2016
- 2016-11-14 US US15/351,052 patent/US10258488B2/en active Active
-
2017
- 2017-11-13 WO PCT/US2017/061209 patent/WO2018089867A1/en active Application Filing
- 2017-11-13 CN CN201780070363.4A patent/CN109937024A/en not_active Withdrawn
- 2017-11-13 EP EP17805067.0A patent/EP3538036B1/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5827321A (en) * | 1997-02-07 | 1998-10-27 | Cornerstone Devices, Inc. | Non-Foreshortening intraluminal prosthesis |
| US5843175A (en) * | 1997-06-13 | 1998-12-01 | Global Therapeutics, Inc. | Enhanced flexibility surgical stent |
| US20060015173A1 (en) * | 2003-05-06 | 2006-01-19 | Anton Clifford | Endoprosthesis having foot extensions |
| WO2007024484A1 (en) * | 2005-08-26 | 2007-03-01 | Medlogics Device Corporation | Lumen-supporting stents and methods for creating lumen-supporting stents with various open/closed designs |
| US20090105809A1 (en) * | 2007-10-19 | 2009-04-23 | Lee Michael J | Implantable and lumen-supporting stents and related methods of manufacture and use |
| CN101579268A (en) * | 2008-05-15 | 2009-11-18 | 微创医疗器械(上海)有限公司 | Reticulated endovascular stent |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3538036B1 (en) | 2021-10-27 |
| EP3538036A1 (en) | 2019-09-18 |
| US10258488B2 (en) | 2019-04-16 |
| US20180133038A1 (en) | 2018-05-17 |
| WO2018089867A1 (en) | 2018-05-17 |
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Application publication date: 20190625 |
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